秦岭造山带古生代岩浆作用及地球动力学意义

吴元保

doi:10.3799/dqkx.2019.266

Volume 44 Issue 12

Dec. 2019

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Article Navigation > Earth Science > 2019 > 44(12): 4173-4177

Wu Yuanbao, 2019. Paleozoic Magmatism in the Qinling Orogen and Its Geodynamic Significance. Earth Science, 44(12): 4173-4177. doi: 10.3799/dqkx.2019.266

Citation:

Wu Yuanbao, 2019. Paleozoic Magmatism in the Qinling Orogen and Its Geodynamic Significance. Earth Science, 44(12): 4173-4177. doi: 10.3799/dqkx.2019.266

Wu Yuanbao, 2019. Paleozoic Magmatism in the Qinling Orogen and Its Geodynamic Significance. Earth Science, 44(12): 4173-4177. doi: 10.3799/dqkx.2019.266

Citation:

Wu Yuanbao, 2019. Paleozoic Magmatism in the Qinling Orogen and Its Geodynamic Significance. Earth Science, 44(12): 4173-4177. doi: 10.3799/dqkx.2019.266

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Paleozoic Magmatism in the Qinling Orogen and Its Geodynamic Significance

doi: 10.3799/dqkx.2019.266

Wu Yuanbao^,

School of Earth Sciences, China University of Geosciences, Wuhan 430074, China

Received Date: 2019-09-02
Publish Date: 2019-12-15

Abstract

Abstract

The Qinling orogen records the whole amalgamation of the North China and South China blocks. The Paleozoic magmatism in the Qinling orogen registers crust-mantle interaction and geodynamics of the orogeny. In this paper, we give a brief review of the Paleozoic magmatism.Intermediate-mafic magmatic rocks derived from the metasomatic mantle reveal fluid activities in the subducted channel. The Fushui mafic complex is enriched in K, and its mantle source has been metasomatized by subducted oceanic sediment. The Kanfenggou pluton belongs to high-Mg diorite. It is inferred by the geochemical characteristics that the mantle sources of the Kanfenggou pluton have experienced subducted fluid metasomatism. The results show that they exhibit a clear spatio-temporal variation, which might be caused by the subduction, retreat, advancement, and rollback of the Proto-Tethys oceanic plate.Therefore we suggest that the Paleozoic crust-mantle interaction was induced by the subduction of the Proto-Tethys ocean.
- Qinling orogen,
- Paleozoic,
- magmatism,
- geodynamics

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References(25)

References

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